Pith Number

pith:4H5P5WB4

pith:1998:4H5P5WB4QTJLLRFXMNMLBYH5SS

not attested not anchored not stored refs pending

Some questions about the index of quantized contact transformations

Alan Weinstein

arxiv:math/9808027 v1 · 1998-08-05 · math.DG · math.SG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4H5P5WB4QTJLLRFXMNMLBYH5SS}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-04T14:40:45.128653Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1fafed83c84d2b5c4b76358b0e0fd9493370d1314f68e3f43476ef306c7a830

Aliases

arxiv: math/9808027 · arxiv_version: math/9808027v1 · doi: 10.48550/arxiv.math/9808027 · pith_short_12: 4H5P5WB4QTJL · pith_short_16: 4H5P5WB4QTJLLRFX · pith_short_8: 4H5P5WB4

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/4H5P5WB4QTJLLRFXMNMLBYH5SS \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: e1fafed83c84d2b5c4b76358b0e0fd9493370d1314f68e3f43476ef306c7a830

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2924975e38f80aca081ab3c0616a1756af968f61d540d66a81b596ce08baac2",
    "cross_cats_sorted": [
      "math.SG"
    ],
    "license": "",
    "primary_cat": "math.DG",
    "submitted_at": "1998-08-05T18:57:58Z",
    "title_canon_sha256": "987689187d2c3ea461664087c830804e2b77f2824d107ba81b239f2b9cc3b724"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/9808027",
    "kind": "arxiv",
    "version": 1
  }
}